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<?php
namespace WPForms\Frontend;
/**
* AMP class.
*
* @since 1.8.1
*/
class Amp {
/**
* Whether the current page is in AMP mode or not.
*
* @since 1.8.1
*
* @var bool
*/
private $is_amp_mode;
/**
* Constructor.
*
* @since 1.8.1
*/
public function __construct() {
$this->hooks();
}
/**
* Register hooks.
*
* @since 1.8.1
*/
private function hooks() {
add_filter( 'amp_skip_post', [ $this, 'skip_post' ] );
add_filter( 'wpforms_frontend_form_atts', [ $this, 'form_atts' ], -PHP_INT_MAX, 2 );
add_action( 'wpforms_frontend_output', [ $this, 'output_state' ], -PHP_INT_MAX, 5 );
}
/**
* Check whether the current page is in AMP mode or not.
*
* @since 1.8.1
*
* @return bool True if the current page is in AMP mode.
*/
public function is_amp() {
if ( is_null( $this->is_amp_mode ) ) {
$this->is_amp_mode = wpforms_is_amp();
}
return $this->is_amp_mode;
}
/**
* Stop AMP output.
*
* @since 1.8.1
*
* @param array $form_data Form data and settings.
*
* @return bool True if we need to stop the output.
*/
public function stop_output( $form_data ) {
// We need to stop output processing in case we are on AMP page.
// phpcs:disable WPForms.PHP.ValidateHooks.InvalidHookName
if (
wpforms_is_amp( false ) &&
(
! current_theme_supports( 'amp' ) ||
/**
* Filters the pro status of the plugin.
*
* @since 1.5.4.2
*
* @param bool $pro Pro status.
*/
apply_filters( 'wpforms_amp_pro', wpforms()->is_pro() ) ||
! is_ssl() ||
! defined( 'AMP__VERSION' ) ||
version_compare( AMP__VERSION, '1.2', '<' )
)
) {
$form_id = ! empty( $form_data['id'] ) ? (int) $form_data['id'] : 0;
$full_page_url = home_url( add_query_arg( 'nonamp', '1' ) . '#wpforms-' . $form_id );
/**
* Allow modifying the text or url for the full page on the AMP pages.
*
* @since 1.4.1.1
* @since 1.7.1 Added $form_id, $full_page_url, and $form_data arguments.
*
* @param string $text Text.
* @param int $form_id Form id.
* @param string $full_page_url Full page url.
* @param array $form_data Form data and settings.
*
* @return string
*/
$text = (string) apply_filters(
'wpforms_frontend_shortcode_amp_text',
sprintf( /* translators: %s - URL to a non-amp version of a page with the form. */
__( '<a href="%s">Go to the full page</a> to view and submit the form.', 'wpforms-lite' ),
esc_url( $full_page_url )
),
$form_id,
$full_page_url,
$form_data
);
printf(
'<p class="wpforms-shortcode-amp-text">%s</p>',
wp_kses_post( $text )
);
return true;
}
// phpcs:enable WPForms.PHP.ValidateHooks.InvalidHookName
return false;
}
/**
* Disable AMP if query param is detected.
*
* This allows the full form to be accessible for Pro users or sites
* that do not have SSL.
*
* @since 1.8.1
*
* @param bool $skip Skip AMP mode, display full post.
*
* @return bool
*/
public function skip_post( $skip ) {
// phpcs:ignore WordPress.Security.NonceVerification.Recommended
return isset( $_GET['nonamp'] ) ? true : $skip;
}
/**
* Form attributes filter.
*
* @since 1.8.1
*
* @param array $form_atts Form attributes.
* @param array $form_data Form data.
*
* @return array
*/
public function form_atts( $form_atts, $form_data ) {
if ( ! $this->is_amp() ) {
return $form_atts;
}
// Set submitting state.
if ( ! isset( $form_atts['atts']['on'] ) ) {
$form_atts['atts']['on'] = '';
} else {
$form_atts['atts']['on'] .= ';';
}
$form_id = ! empty( $form_data['id'] ) ? (int) $form_data['id'] : 0;
$form_atts['atts']['on'] .= sprintf(
'submit:AMP.setState( %1$s ); submit-success:AMP.setState( %2$s ); submit-error:AMP.setState( %2$s );',
wp_json_encode(
[
$this->get_form_amp_state_id( $form_id ) => [ 'submitting' => true ],
]
),
wp_json_encode(
[
$this->get_form_amp_state_id( $form_id ) => [ 'submitting' => false ],
]
)
);
// Upgrade the form to be an amp-form to avoid sanitizer conversion.
if ( isset( $form_atts['atts']['action'] ) ) {
$form_atts['atts']['action-xhr'] = $form_atts['atts']['action'];
$form_atts['atts']['verify-xhr'] = $form_atts['atts']['action-xhr'];
unset( $form_atts['atts']['action'] );
}
return $form_atts;
}
/**
* Get the amp-state ID for a given form.
*
* @since 1.8.1
*
* @param int $form_id Form ID.
*
* @return string State ID.
*/
private function get_form_amp_state_id( $form_id ) {
return sprintf( 'wpforms_form_state_%d', $form_id );
}
/**
* Output AMP state.
*
* @since 1.8.1
*
* @param array $form_data Form data and settings.
* @param null $deprecated Deprecated.
* @param string $title Form title.
* @param string $description Form description.
* @param array $errors Errors.
*
* @noinspection PhpUnusedParameterInspection
*/
public function output_state( $form_data, $deprecated, $title, $description, $errors ) {
if ( ! $this->is_amp() ) {
return;
}
$state = [ 'submitting' => false ];
$form_id = ! empty( $form_data['id'] ) ? (int) $form_data['id'] : 0;
printf(
'<amp-state id="%s"><script type="application/json">%s</script></amp-state>',
$this->get_form_amp_state_id( $form_id ), // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
wp_json_encode( $state )
);
}
/**
* Output submit success template.
*
* @since 1.8.1
*
* @param array $form_data Form data and settings.
*
* @return bool True if the template was printed.
*/
public function output_success_template( $form_data ) {
if ( ! $this->is_amp() ) {
return false;
}
$frontend = wpforms()->get( 'frontend' );
if ( ! $frontend ) {
return false;
}
$frontend->assets_confirmation( $form_data );
$class = (int) wpforms_setting( 'disable-css', '1' ) === 1 ?
'wpforms-confirmation-container-full' :
'wpforms-confirmation-container';
printf(
'<div submit-success><template type="amp-mustache"><div class="%s {{#redirecting}}wpforms-redirection-message{{/redirecting}}">{{{message}}}</div></template></div>',
esc_attr( $class )
);
return true;
}
/**
* Output submit error template.
*
* @since 1.8.1
*
* @return bool True if the template was printed.
*/
public function output_error_template() {
if ( ! $this->is_amp() ) {
return false;
}
echo '<div submit-error><template type="amp-mustache"><div class="wpforms-error-container"><p>{{{message}}}</p></div></template></div>';
return true;
}
/**
* Get text attribute.
*
* @since 1.8.1
*
* @param int $form_id Form ID.
* @param array $settings Form settings.
* @param string $submit Submit button text.
*
* @return string
*/
public function get_text_attr( $form_id, $settings, $submit ) {
return sprintf(
'%s.submitting ? %s : %s',
$this->get_form_amp_state_id( $form_id ),
wp_json_encode( $settings['submit_text_processing'], JSON_UNESCAPED_UNICODE ),
wp_json_encode( $submit, JSON_UNESCAPED_UNICODE )
);
}
/**
* Output captcha.
*
* @since 1.8.1
*
* @param bool $is_recaptcha_v3 Whether we use v3.
* @param array $captcha_settings Captcha settings.
* @param array $form_data Form data.
*
* @return bool
*/
public function output_captcha( $is_recaptcha_v3, $captcha_settings, $form_data ) {
if ( ! $this->is_amp() ) {
return false;
}
if ( $is_recaptcha_v3 ) {
printf(
'<amp-recaptcha-input name="wpforms[recaptcha]" data-sitekey="%s" data-action="%s" layout="nodisplay"></amp-recaptcha-input>',
esc_attr( $captcha_settings['site_key'] ),
esc_attr( 'wpforms_' . $form_data['id'] )
);
return true;
}
if ( is_super_admin() ) {
$captcha_provider = $captcha_settings['provider'] === 'hcaptcha' ? esc_html__( 'hCaptcha', 'wpforms-lite' ) : esc_html__( 'Google reCAPTCHA v2', 'wpforms-lite' );
echo '<div class="wpforms-notice wpforms-warning" style="margin: 20px 0;">';
printf(
wp_kses( /* translators: %1$s - CAPTCHA provider name, %2$s - URL to reCAPTCHA documentation. */
__( '%1$s is not supported by AMP and is currently disabled.<br><a href="%2$s" rel="noopener noreferrer" target="_blank">Upgrade to reCAPTCHA v3</a> for full AMP support. <br><em>Please note: this message is only displayed to site administrators.</em>', 'wpforms-lite' ),
[
'a' => [
'href' => [],
'rel' => [],
'target' => [],
],
'br' => [],
'em' => [],
]
),
$captcha_provider, // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
'https://wpforms.com/docs/setup-captcha-wpforms/'
);
echo '</div>';
return true;
}
return false;
}
}